Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C2651 found under Hose Air Duct by Kirkhill Ta Co. The National Stock Number assigned to this part is 4720011431423, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C2651.